Evidence for 4f-shell delocalization in praseodymium under pressureH.K. MaoR.M. Hazenet al.1981Journal of Applied PhysicsPaper
Evidence for a pressure-induced magnetic-nonmagnetic transition of Pr impurities in laJörg Wittig1981Physical Review LettersPaper
Intermediate valent metallic SmS and SmSe: A new puzzleF. HoltzbergJ. Wittig1981Solid State CommunicationsPaper
Possible observation of localized 4 f shell breakdown in praseodymium under pressureJörg Wittig1980Zeitschrift für Physik B Condensed MatterPaper